#include <iostream>
using namespace std;
int main() {
  int a1 = 10;
  int b1 = 3;
  cout << "a1+b1=" << a1 + b1 << endl;
  cout << "a1-b1=" << a1 - b1 << endl;
  cout << "a1*b1=" << a1 * b1 << endl;
  cout << "a1/b1=" << a1 / b1 << endl;
  return 0;
}
